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JNCIS-ENT Exam Objectives (Exam: JN0-343)

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This list provides a general view of the skill set required to successfully complete the specified certification exam. Topics listed are subject to change.

  • Layer 2 Switching and VLANs
  • Spanning Tree
  • Layer 2 Security
  • Protocol Independent Routing
  • Open Shortest Path First (OSPF)
  • Intermediate System to Intermediate System (IS-IS)
  • Border Gateway Protocol (BGP)
  • Tunnels
  • High Availability

Layer 2 Switching and VLANs

  • Describe the concepts, operation, and functionality of Layer 2 switching for the Junos OS
    • Enterprise switching platforms
    • Bridging components
    • Frame processing
  • Describe the concepts, benefits, and functionality of VLANs
    • Ports
    • Tagging
    • Native VLANs and voice VLANs
    • Inter-VLAN routing
  • Configure, monitor and troubleshoot Layer 2 switching and VLANs
    • Interfaces and ports
    • VLANs
    • Routed VLAN interfaces (RVI)

Spanning Tree

  • Describe the concepts, benefits, operation, and functionality of the Spanning Tree Protocol
    • STP and RSTP concepts
    • Port roles and states
    • BPDUs
    • Convergence and reconvergence
  • Configure and monitor STP and RSTP
    • STP
    • RSTP

To Top

Layer 2 Security

  • Describe the concepts, benefits and operation of various protection and security features
    • BPDU, loop and root protection
    • Port security, including MAC limiting, DHCP snooping, Dynamic ARP inspection (DAI) and IP source guard
    • Storm control
  • Describe the concepts, benefits and operation of Layer 2 firewall filtres
    • Filter types
    • Processing order
    • Match criteria and actions
  • Configure and monitor Layer 2 security
    • Protection
    • Port security
    • Storm control
    • Firewall filter configuration and application

Protocol Independent Routing

  • Describe the concepts, operation and functionality of various protocol-independent routing components
    • Static, aggregate, and generated routes
    • Martian addresses
    • Routing instances, including RIB groups
    • Load balancing
    • Filter-based forwarding
  • Configure and monitor various protocol-independent routing components
    • Static, aggregate, and generated routes
    • Load balancing
    • Filter-based forwarding

To Top

Open Shortest Path First (OSPF)

  • Explain the concepts, operation and functionality of OSPF
    • Link-state database
    • OSPF packet types
    • Router ID
    • Adjacencies and neighbors
    • Designated router (DR) and backup designated router (BDR)
    • OSPF area and router types
    • LSA packet types
  • Configure, monitor and troubleshoot OSPF
    • Areas, interfaces and neighbors
    • Additional basic options
    • Routing policy application
    • Troubleshooting tools

Intermediate System to Intermediate System (IS-IS)

  • Explain the concepts, operation and functionality of IS-IS
    • Link-state database
    • IS-IS PDUs
    • TLVs
    • Adjacencies and neighbors
    • Levels and areas
    • Designated intermediate system (DIS)
    • Metrics
  • Configure, monitor and troubleshoot IS-IS
    • Levels, interfaces and adjacencies
    • Additional basic options
    • Routing policy application
    • Troubleshooting tools

To Top

Border Gateway Protocol (BGP)

  • Explain the concepts, operation and functionality of BGP
    • BGP basic operation
    • BGP message types
    • Attributes
    • Route/path selection process
    • IBGP and EBGP functionality and interaction
  • Configure and monitor BGP
    • Groups and peers
    • Additional basic options
    • Routing policy application

Tunnels

  • Describe the concepts, requirements and functionality of IP tunneling
    • Tunneling applications and considerations
    • GRE
    • IP-IP
  • Configure and monitor IP tunnels
    • GRE
    • IP-IP

To Top

High Availability

  • Describe the concepts, benefits, applications and requirements high availability in a Junos OS environment
    • Link aggregation groups (LAG)
    • Redundant trunk groups (RTG)
    • Virtual Chassis
    • Graceful restart (GR)
    • Graceful Routing Engine switchover (GRES)
    • Nonstop active routing (NSR)
    • Bidirectional Forwarding Detection (BFD)
    • Virtual Router Redundancy Protocol (VRRP)
    • Unified In-Service Software Upgrade (ISSU)
  • Configure and monitor high availability components
    • LAG and RTG
    • Virtual Chassis
    • GR, GRES and NSR
    • VRRP
    • ISSU

 

 

 

 

 

 
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